597297285261 has 6 divisors (see below), whose sum is σ = 862762745390. Its totient is φ = 398198190168.

The previous prime is 597297285251. The next prime is 597297285269. The reversal of 597297285261 is 162582792795.

597297285261 is a `hidden beast` number, since 5 + 9 + 7 + 2 + 97 + 285 + 261 = 666.

It can be written as a sum of positive squares in only one way, i.e., 436103065161 + 161194220100 = 660381^2 + 401490^2 .

It is not a de Polignac number, because 597297285261 - 2¹⁴ = 597297268877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (597297285269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33183182506 + ... + 33183182523.

Almost surely, 2^597297285261 is an apocalyptic number.

It is an amenable number.

597297285261 is a deficient number, since it is larger than the sum of its proper divisors (265465460129).

597297285261 is a wasteful number, since it uses less digits than its factorization.

597297285261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66366365035 (or 66366365032 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 63.

The spelling of 597297285261 in words is "five hundred ninety-seven billion, two hundred ninety-seven million, two hundred eighty-five thousand, two hundred sixty-one".